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NASA scrubs today’s launch of Mars spaceship; Orion liftoff rescheduled for Friday

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The Orion spacecraft is stacked on the Delta IV Heavy launch vehicle at the United Launch Alliance launch complex 37b at Cape Canaveral, Florida on Dec. 4, 2014.

UPDATE 12/4/14 8:41 A.M.

CAPE CANAVERAL, Fla. – NASA has scrubbed the test flight launch of Orion after strong winds and a valve problem.

The space agency will try again Friday morning to launch the Mars spaceship.

Previous story:

CAPE CANAVERAL, Fla. – (CNN)  — NASA on Thursday morning hopes to enjoy one of its biggest moments since the shuttle era ended in 2011 — if it can get some kinks worked out.

The space agency’s new Orion spacecraft is scheduled to lift off on an uncrewed test flight from Space Launch Complex 37 at Cape Canaveral, Florida. But some delays have so far kept it on the launch pad.

The launch, initially set for 7:05 a.m. ET, was delayed for various reasons, including wind gusts, a boat coming too close to the launch area, and a failure of some fuel valves to close in the booster rockets, NASA said.

Mission managers hope to launch the craft before the day’s window closes at 9:44 a.m. ET.

“We haven’t had this feeling in awhile, since the end of the shuttle program,” Mike Sarafin, Orion flight director at Johnson Space Center, said in a preflight briefing on Wednesday. He said it’s the beginning of something new: exploring deep space.

Orion looks like a throwback to the Apollo era, but it is roomier and designed to go far beyond the moon: to an asteroid and eventually to Mars.

“It is, I think, consistent with those — the beginning of shuttle and beginning of Apollo,” said Mark Geyer, NASA Orion program manager. “I think it’s in the same category.”

When it becomes fully operational, Orion’s crew module will be able to carry four people on a 21-day mission into deep space or six astronauts for shorter missions. By comparison, the Apollo crew modules held three astronauts and were in space for six to 12 days. Orion’s crew module is 16.5 feet in diameter and Apollo was 12.8 feet in diameter, NASA said.

Orion is expected to take up its first crew in 2021.

During this test flight, Orion will climb to an altitude of 3,600 miles (15 times higher than the International Space Station) and will orbit Earth twice. Four and half hours later, it will splash down in the Pacific Ocean about 600 miles off the coast of Baja California. Two U.S. Navy ships, the amphibious transport dock ship USS Anchorage and the Military Sealift Command rescue and salvage ship USNS Salvor, will help NASA recover the capsule.

NASA said there haven’t been any major issues with the countdown. The vehicle is “extremely clean” and “we’re ready to go,” said Geyer.

The weather forecast for liftoff also looked good, as of Wednesday with a 70% chance of acceptable launch conditions, according to Kathy Winters, a U.S. Air Force weather officer. “It looks pretty promising weather-wise for launch,” she said.

The temperature at launch time should be around 71 degrees Fahrenheit.

With mostly clear skies in the forecast, residents along Florida’s east coast should be able to see the contrail from the huge Delta IV Heavy rocket that will carry Orion into orbit. The rocket is provided by United Launch Alliance, one of the private partners helping NASA with this launch. Eventually, NASA will use its own Space Launch System, which is under construction.

Once in orbit, Orion should send back some amazing pictures of Earth, NASA said. If the weather cooperates, NASA said a drone will provide a live video feed of the splashdown.

Though Orion’s first flight won’t have people on it, it won’t go up empty. It will carry the names of more than a million people packed on a dime-sized microchip.

“Sesame Street” is sending up some mementos to inspire students about spaceflight, including Cookie Monster’s cookie and Ernie’s rubber ducky.

Also going up: an oxygen hose from an Apollo 11 lunar spacesuit and a small sample of lunar soil. A Tyrannosaurus rex fossil from the Denver Science Museum will be on board and lockers will be filled with flags, coins, patches, poetry and music.

In one more throwback to the Apollo-era, NASA veteran Gene Kranz will be a VIP in Mission Control at Johnson Space Center in Houston when Orion is launched. Kranz was flight director for Apollo 11 during the first landing on the moon and he was flight director for the return of the Apollo 13 crew.

“I look forward very much to having him watch the team in action,” Serafin said.

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